Joseph c



J.- C. FORD.

' HAND LAMP.

APPLICATION FILED JUNE6, I919.

1 ,3249 547. Patented Dec. 9, 1919.

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UNITED STATES PATENT OFFICE.

JOSEPH C. FORD, F MADISON, WISCONSIN, ASSIGNOR 'IO FRENCH BATTERY &CARBON COMPANY, OF MADISON, WISCONSIN, A CORPORATION OF WISCONSIN.

HAND-LAMP.

To all whom it may concern:

Be it known that I, JOSEPH C. FORD, a citizen of the United States,residing at Madison, in the county of Dane and State of Wisconsin, haveinvented a new and useful Improvement in Hand-Lamps, of which thefollowing is a specification.

This invention relates particularly to electric hand-lamps; and theprimary object is to provide an improved lamp of this character, havingspecial provision for mounting the reflector and lens in an improvedmanner.

A further object is to provide such a construction, having provisionagainst acci; dental short-circuiting of the device.

The invention is illustrated, in its preferred embodiment, in theaccompanying drawing, which represents a longitudinal sectional view,the batteries employed being shown .in elevation, however.

In the construction illustrated, represents a tubular casing which maybeof convenient size to be carried readily in the hand, or, if desired, inthe pocket; B, a battery, here shown as comprising two dry cells B and B0, a metallic reflector mounted on one end of the casing; C, a lenssur-.

mounting said reflector; D, an incandescentlamp mounted in thereflector; and E, a

contact device mounted on one side of the casing and equipped with aconductor E,

leading to the front endof the casing and a conductor E leading to thebase-end of the casing.

The casing A comprises a tubular body 1 of insulating material, suchas'fiber, which is equipped at its base end with a 't\l;readed sleeve, orfurriile, 2, upon which is ecured a metal cap 3, which supports aconical metal spring 4; a combination reflector and lens supporting.device 5 comprising a threaded metal sle ve 5 secured in the sleeve 5screwed on to the projecting en Specification of Letters Patent.

Application filed June 6, 1919.

Patented Dec. 9, 1919.

Serial No. 302,094.

of the base end of the tubular body A, and secured thereto by a rivet 7which is also secured to the thin copper strip which constitutes theconductor E Thus, it will be seen that the conductor E is in electricalconnection with the spring 4. The cells of the battery B have zinccontainers, and are provided at their upper or forward ends with centralelectrodes 8. The bottom of the zinc container of the lower cell restsupon the spring 4, and the bottom of the upper zinc container rests uponthe electrode 8 of the lower cell, so that the cells are in series. Thecells are inclosed in a'pasteboard tube B The lamp is screwed into asocket with which the reflector C is provided, and the central contactof the lamp bears upon the central electrode of the upper cell. Thecircuit is completed through the lamp socket, the reflector, the sleeve5, and the conductor E, when the contact device E is closed. In theillustration, the contact device is shown provided with a button, orslide, 9, equipped with a spring shoe 9, Which is adapted to makecontact with the lower end of the metal strip, or conductor, E.

The metal sleeve 5 is fitted in the upper end of the tubular casing Aand secured thereto by a rivet 10 which connects the sleeve both to thecasing A and the metal strip forming the conductor E.

The sleevej5? is equipped at its outer end with an inturned flange 11,upon which the peripheral flange of the reflector bears. The lens C, inturn, bears against the peripheral flange of the reflector C; and theclamping ring, or sleeve 5", is provided with a flange 12, which bearsagainst the outer surface of the peripheral portion of the lens.

Thus, it will be seen that the reflector and the lens are securelyclamped together, it being understood that the sleeve 5 is screwed frontend of the casing, and a threaded metag\ onto the sleeve 5*.

of the member 5, the sleeves 5 and 5 being equipped with flanges betweenwhich the circumferential flange of the reflector and thecircumferential portion of the lens are clamped, or secured; and a metalhousing-sleeve 6, lined with insulation material 6 said housing-sleevebeing screwed onto the member 5 and insulated therefrom by theinsulating member, or material, 6*.

The sleeve 2 is fitted on the outer surface supporting device andreflector which form 110 The hand-lamp is thus an operative (le- 'v1ce,without the use of the housing-sleeve 6.

It is preferred, however, to supply the housing-sleeve 6 as a'finishingsleeve; and,'1n practice the sleeve 6, the ferrule 2, and the base-caf%are ordinarily nickel-plated, while the in ulation tube 1 may be ofblack fiber, so that the device will present an ornamental appearance.Inasmuch as the housing-sleeve 6 .is insulated from the reflectorfromthe appearance of the device.

a part of the circuit, there is no danger of the hand-lamp becomingshort-circuited, even though the hand-lamp be laid upon a metal plate,which would thus afford a conducting medium between the base-cap 3 andthe housing-sleeve 6. It will be noted, in this connection, that theouter end of the rivet 10 is counter-sunk and free from contact with thesleeve 6.

The construction described is simple, thoroughly practicable, andprovides a secure connection between the insulating casing 1 and thereflector and surmounting lens. As shown, the threading of the parts isaccomplished by a spinning or pressing process, which adds to, ratherthan detracts,

However, any suitable design may be employed for making connections 'andgiving a finished appearance to the device. In the constructionillustrated, the reflector-andlensretaining sleeve 5 may be unscrewedfrom the permanently secured sleeve 5 to give access to the lamp bulb.

The foregoing detailed description has been given for clearness ofunderstanding only. and no unnecessary lin'iitation should be nmlerstoodtherefrom, but the appended claims should be construed as broadly aspermissible. in view of the prior art.

What I regard as new and desire to secure by Letters Patent is:

1. In a hand-lamp insulating casing, a

the combination of an battery therein, a closure for the base-end ofsaid casing, a spr ng interposed between said closure and the batteryand serving to establish connection with the battery, areflector-supporting device comprising a sleeve secured to the other endof the casing and a companion sleeve titted thereon, said sleeves beingprovided with tlanges, a metal reflector and a lens secured between theflanges of said sleeves, a lamp mounted in said reflector and havingcontact with the battery, a contact device mounted on said casing,conductors extending from said contact device within said casing andhaving electrical connection with said tirstnamed sleeve. and with saidspring, and a housing-sleeve enveloping said I second named sleeve andthe upper portion of said casing and insulated from said secondnamedsleeve.

2. In a hand-lamp, the combination ol an insulating casing, a closurefor the basecnd thereof, a battery in said casing, a contact devicemounted on one side of said casing. an internal conductor leading fromsaid contact device to the base-end ot' the tasing and having electricalconnection with the base end of the battery, an internal conductorleading from said contact device to the forward end of said casing, asleeve titted into the forward end of said casing and in electricalconnection with said last-named conductor, said sleeve being providedwith an extending threaded portion and an inturned flange, a reflectorhaving a peripheral flange bearing thereon and equipped with a lamphaving electrical connection with the forward end of the battery, a lenssurmounting said reflector, a clamping sleeve screwed on to saidfirst-named sleeve and having a flange engaging the outer surface ofsaid lens, and a l1ousing-sleeve having an insulating lining, saidhousingsleeve being screwed onto said clamping sleeve and extending overthe forward end-portion of the insulating casing.

JOSEPH C. WORD.

